如题所述
第1个回答 2020-06-14
简便计算
272÷4×45
=68×45
=68×5×9
=340×9
=3060
272÷4×45
=68×45
=68×5×9
=340×9
=3060
第2个回答 2020-06-14
272÷4×45
=（280-8）÷4×45
=（280÷4-8÷4）×45
=（70-2）×45
=70×45-2×45
=3150-90
=3060本回答被网友采纳
=（280-8）÷4×45
=（280÷4-8÷4）×45
=（70-2）×45
=70×45-2×45
=3150-90
=3060本回答被网友采纳
第3个回答 2023-09-04
272➗4✖️45
=136➗2✖️45
=68*45
=34*90
=3060
=136➗2✖️45
=68*45
=34*90
=3060
